[I]t is difficult to imagine a set of beliefs more suggestive of mental illness than those that lie at the heart of many of our religious traditions.

You can learn something about a person by the company she keeps.

Most people believe that the Creator of the universe wrote (or dictated) one of their books. Unfortunately, there are many books that pretend to divine authorship, and each makes incompatible claims about how we all must live.

Norway, Iceland, Australia, Canada, Sweden, Switzerland, Belgium, Japan, the Netherlands, Denmark, and the United Kingdom are among the least religious societies on earth. According to the United Nations' Human Development Report (2005), they are also the healthiest, as indicated by life expectancy, adult literacy, per capita income, educational attainment, gender equality, homicide rate, and infant mortality. . . . Conversely, the fifty nations now ranked lowest in terms of the United Nations' human development index are unwaveringly religious.

Indeed, what is startling about the notion of a victimless crime is that even when the behavior in question is genuinely victimless, its criminality is still affirmed by those who are eager to punish it. It is in such cases that the true genius lurking behind many of our laws stands revealed. The idea of a victimless crime is nothing more than a judicial reprise of the Christian notion of sin.

Human well-being is not a random phenomenon. It depends on many factors - ranging from genetics and neurobiology to sociology and economics. But, clearly, there are scientific truths to be known about how we can flourish in this world. Wherever we can have an impact on the well-being of others, questions of morality apply.

To treat others ethically is to act out of concern for their happiness and suffering.